Merge remote-tracking branch 'remotes/famz/tags/docker-pull-request' into staging

# gpg: Signature made Fri 10 Mar 2017 07:15:38 GMT
# gpg:                using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021  AD56 CA35 624C 6A91 71C6

* remotes/famz/tags/docker-pull-request:
  docker/dockerfiles/debian-s390-cross: include clang
  tests/docker: support proxy / corporate firewall
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

tests/docker/docker.py

@@ -28,6 +28,9 @@ from shutil import copy, rmtree
 from pwd import getpwuid
 
 
+FILTERED_ENV_NAMES = ['ftp_proxy', 'http_proxy', 'https_proxy']
+
+
 DEVNULL = open(os.devnull, 'wb')
 
 
@@ -272,6 +275,9 @@ class BuildCommand(SubCommand):
                 _copy_binary_with_libs(args.include_executable,
                                        docker_dir)
 
+            argv += ["--build-arg=" + k.lower() + "=" + v
+                        for k, v in os.environ.iteritems()
+                        if k.lower() in FILTERED_ENV_NAMES]
             dkr.build_image(tag, docker_dir, dockerfile,
                             quiet=args.quiet, user=args.user, argv=argv)
 

tests/docker/dockerfiles/debian-s390x-cross.docker

@@ -13,8 +13,8 @@ RUN cat /etc/apt/sources.list | sed "s/deb/deb-src/" >> /etc/apt/sources.list
 RUN dpkg --add-architecture s390x
 
 # Grab the updated list of packages
-RUN apt update
-RUN apt dist-upgrade -yy
+RUN apt update && apt dist-upgrade -yy
+RUN apt install -yy build-essential clang
 RUN apt-get build-dep -yy -a s390x qemu || apt-get -f install
 RUN apt install -yy gcc-multilib-s390x-linux-gnu binutils-multiarch